The Kelmscott Post Shop is located at Shop 23, Stargate Shoppong Centre, 2788 Albany Highway, and provides a full range of services, with post office boxes available, as well as passport business. It is open from 9 AM to 6 PM Monday to Friday, 9 AM to 12:30 PM Saturday, closed Sunday. It also offers parcel collection from the PO Box Suite from 6 AM to 8:30 AM Monday, Thursday and Friday, although I suspect this is a mistake on the Australia Post web site and it is available Monday to Friday.